List.take_length: law of bend-mathlib@0.8.1.0
Import: import bend-mathlib@0.8.1.0/list.bend as List
Lines 312-316 of bend-mathlib@0.8.1.0/list.bend: https://jend.leeeet.dev/read.txt?path=bend-mathlib@0.8.1.0/list.bend&start_line=312&end_line=316

import Base

# Taking as many elements as the list has gives the list back.
law take_length:
  for -A: Data
  for +xs: List<&2, A>
  {List.take(&2, A, xs, List.length(&2, A, xs)) == xs : List<&2, A>}

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List.length
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List.take